Revenue Recognition (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Subtotal	$ 750	$ 647
Alternative revenue programs, net of amortization	(11)	3
Other accrued (deferred) revenues, net	1	1
Total retail revenues	740	651
Wholesale revenues	176	88
Other operating revenue	13	9
Total revenues	929	748
Gain on Derivative Instruments, Pretax	88	34
Residential [Member]
Disaggregation of Revenue [Line Items]
Subtotal	415	362
Commercial [Member]
Disaggregation of Revenue [Line Items]
Subtotal	227	197
Industrial [Member]
Disaggregation of Revenue [Line Items]
Subtotal	102	82
Direct Access customers [Member]
Disaggregation of Revenue [Line Items]
Subtotal	$ 6	$ 6